you're on the right site for the info. lots of stuff available through the search engine. for <45K you could get into a early X45 or an 06+ X30. they won't be ski boats, but will give good surf and wakeboard wakes. the X2 is a bit more versatile and obviously smaller.

Listen to these peeps David! If you're gonna wakesurf, then by all means, stay away from the X-star. That boat is good for 2 things! picking up women and wakeBOARDING! Hull design is not conducive to wakesurfing at all. That X-2 that's for sale here is THE boat for you! I had an 07-X2 and it was PERFECT for everything you're wanting in a boat. Its got PLENTY of room, Storage, runs great in rough water, better fuel consumption, and will help pick up a babe every now & then!
BTW, you've got a typo in your ad on your boat. You forgot the word 'CAN' in the 2010 2100 line.
Looks like Action Water Sports has plenty of inventory of X-2's and X-14V's too. You considered trading?